Verification &amp;amp; validation of simulation code for Linear Fresnel systems

Benyakhlef, Sara; Mers, Ahmed Al; Bouatem, Abdelfattah; Boutammachte, Noureddine; Merroun, Ossama

doi:10.1109/irsec.2014.7059856

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…This explains why scientific research axes have started to turn to a strategy where the ecological variant is omnipresent while several renewable energy research projects have emerged. CHAMS-1 is one of the R&D projects on Solar Energy supported by IRESEN (Institute of Research on Solar and New Energy-Morocco) [7]. The project aims to design and implement a new low cost CSP system based on a new generation of Linear Fresnel technology [8], taking into account the local solar and climate conditions, cost reduction, material enhancement and efficiency gain.…”

Section: Introductionmentioning

confidence: 99%

Impact of heliostat curvature on optical performance of Linear Fresnel solar concentrators

Benyakhlef¹,

Mers²,

Merroun³

et al. 2016

Renewable Energy

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a b s t r a c tThe present paper gives a numerical investigation of the effect of mirror curvature on optical performance of a Linear Fresnel Reflector solar field installed recently in Morocco. The objective is to highlight and discuss the effect of mirror curvature on the flux density distribution over the receiver and the system optical efficiency. For this purpose, a Monte Carlo-ray tracing simulation tool is developed and used to optimize the optical design taking into account the curvature degree of the heliostat field. In order to assess the accuracy of the numerical code developed and the validity of simulation results, a set of verification tests were developed and detailed within this article. Then, the optical performance of the system is evaluated as a function of mirror curvature and receiver height. The major challenge of this study is to find a trade-off between heliostat curvature and receiver height since lower and smaller receivers may reduce the system cost. It has been found that the flux distribution over the receiver and the optical efficiency of the system are relatively sensitive to the mirror curvature. We have demonstrated quantitatively how the use of curved mirrors can enhance the optical performance and reduce the required receiver size.

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Section: Introductionmentioning

confidence: 99%

Impact of heliostat curvature on optical performance of Linear Fresnel solar concentrators

Benyakhlef¹,

Mers²,

Merroun³

et al. 2016

Renewable Energy

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Performance analysis of a Parabolic Linear Fresnel system

Benyakhlef

Mers

Bouatem

et al. 2015

2015 3rd International Renewable and Sustainable Energy Conference (IRSEC)

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Curvature Variability Study for Small- and Large-Scale Linear Fresnel Solar Fields: A Step Toward Optimization

Benyakhlef¹,

Mers²,

Merroun³

et al. 2017

Journal of Solar Energy Engineering

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Reducing levelized electricity costs of concentrated solar power (CSP) plants can be of great potential in accelerating the market penetration of these sustainable technologies. Linear Fresnel reflectors (LFRs) are one of these CSP technologies that may potentially contribute to such cost reduction. However, due to very little previous research, LFRs are considered as a low efficiency technology. In this type of solar collectors, there is a variety of design approaches when it comes to optimizing such systems. The present paper aims to tackle a new research axis based on variability study of heliostat curvature as an approach for optimizing small and large-scale LFRs. Numerical investigations based on a ray tracing model have demonstrated that LFR constructors should adopt a uniform curvature for small-scale LFRs and a variable curvature per row for large-scale LFRs. Better optical performances were obtained for LFRs regarding these adopted curvature types. An optimization approach based on the use of uniform heliostat curvature for small-scale LFRs has led to a system cost reduction by means of reducing its receiver surface and height.

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Verification & validation of simulation code for Linear Fresnel systems

Cited by 3 publications

References 3 publications

Impact of heliostat curvature on optical performance of Linear Fresnel solar concentrators

Impact of heliostat curvature on optical performance of Linear Fresnel solar concentrators

Performance analysis of a Parabolic Linear Fresnel system

Curvature Variability Study for Small- and Large-Scale Linear Fresnel Solar Fields: A Step Toward Optimization

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